C#

Using `out` Parameters to Return Multiple Values

This snippet demonstrates how to use the `out` keyword in C# to pass parameters by reference and return multiple values from a method. Unlike `ref`, the `out` keyword requires the method to assign a...

C# Core C#

ADO.NET: Executing Non-Query Commands (INSERT, UPDATE, DELETE)

This code snippet demonstrates how to execute non-query commands such as INSERT, UPDATE, and DELETE statements using ADO.NET. It illustrates the use of the `ExecuteNonQuery()` method of the...

C# Data Access

Asynchronous Processing with Task.Run and Task.FromResult

This snippet demonstrates how to use Task.Run to offload work to a thread pool thread and Task.FromResult to create a task that is already completed with a specified result. These are powerful tools...

C# Asynchronous Programming

Using Rfc2898DeriveBytes for Key Derivation

This example demonstrates using Rfc2898DeriveBytes to securely derive cryptographic keys from a password and salt, which can be used for encryption and decryption.

C# Security and Cryptography

Dynamic C# Compilation with Roslyn

This snippet demonstrates how to dynamically compile C# code at runtime using the Roslyn compiler. It compiles a simple C# class and executes a method within it.

C# Compiler and Runtime

Using DllImport to Access Native Functions

This snippet demonstrates how to use the DllImport attribute in C# to call functions from unmanaged DLLs (native code). This allows managed C# code to interact with native libraries written in...

C# Interop and Unsafe Code

Dynamic Type Creation with Attributes and Reflection

This example demonstrates how to dynamically create a type at runtime, apply custom attributes to it, and then access these attributes using reflection. This technique is useful for scenarios where...

C# Advanced C#

Reading and Writing Text to a File in C#

This code snippet demonstrates how to read and write text to a file using C#. It utilizes the `StreamWriter` and `StreamReader` classes for efficient file operations. The example covers creating a...

C# Data Access

Basic Type Conversion using Convert Class

This snippet demonstrates basic type conversion using the Convert class in C#. It shows how to convert strings to integers, doubles to strings, and booleans to integers.

C# Core C#

Basic Ternary Operator Usage

This snippet demonstrates the fundamental usage of the ternary operator in C# for conditional assignment. It provides a concise way to choose between two values based on a boolean condition.

C# Core C#

Constants and Readonly Fields in C#

This code snippet demonstrates the use of const and readonly keywords in C#. These are used to create fields whose values cannot be changed after initialization, but they differ in when and how they...

C# Core C#

Recursive Calculation with Local Function

This snippet shows a recursive calculation of the factorial of a number, implemented using a local function for enhanced code organization and encapsulation.

C# Core C#

Lambda Expression with Event Handling

This snippet demonstrates how to use a lambda expression to handle an event. It simplifies the event handling process by providing a concise way to define the event handler inline.

C# Advanced C#

Advanced Collection Operations: LINQ and Custom Comparers

This example explores advanced operations on collections using LINQ (Language Integrated Query) and custom comparers. We'll demonstrate filtering, sorting, grouping, and custom sorting based on...

C# Advanced C#

Anonymous Method Event Handling

This snippet demonstrates how to use anonymous methods for event handling in C#. Anonymous methods provide a concise way to define event handlers inline, without the need to create separate named...

C# Advanced C#

Mocking Properties with Moq

This snippet shows how to mock properties of an interface or class using the Moq framework. It demonstrates how to set up property get and set behaviors and verify interactions.

C# Testing and Debugging

Returning Multiple Values Asynchronously

This snippet demonstrates how to return multiple values from an asynchronous method using Task with a custom class. This approach is beneficial when you need to encapsulate related data into a...

C# Asynchronous Programming

P/Invoke: Calling Native DLL Functions in C#

This example demonstrates how to use Platform Invoke (P/Invoke) to call functions in a native DLL from C#. This is crucial for interacting with legacy code, system APIs, or libraries written in other...

C# Interop and Unsafe Code

Finalizer Example: Resource Cleanup

This code demonstrates the use of a finalizer to release unmanaged resources. Finalizers are used when an object holds resources that the garbage collector (GC) doesn't manage directly (e.g., file...

C# Memory Management

Simple Method Declaration and Calling in C#

This example demonstrates how to declare a simple method in C# that takes no parameters and returns a value. It also shows how to call or invoke that method from within the `Main` method. This is the...

C# Core C#

Using the 'fixed' keyword to pin memory for direct access

This snippet demonstrates how to use the fixed keyword in C# to pin an array in memory, allowing for direct pointer manipulation via unsafe code. This is crucial when interacting with unmanaged...

C# Interop and Unsafe Code

Reading and Writing Primitive Data to a Binary File

This snippet demonstrates how to write and read primitive data types (int, double, string) to and from a binary file using the BinaryWriter and BinaryReader classes in C#. This is a fundamental...

C# Data Access

Property Patterns in C#

This snippet demonstrates property patterns in C#, a powerful feature introduced in C# 8.0. Property patterns allow you to match on specific properties of an object, making your code more readable and...

C# Functional Programming

Parallel.ForEach with CancellationToken

This snippet shows how to use Parallel.ForEach to process a collection in parallel while also respecting a CancellationToken. It demonstrates how to cancel the parallel loop based on an external...

C# Asynchronous Programming

FileStream vs. MemoryStream: Basic Usage

This example demonstrates the fundamental differences and usage of FileStream and MemoryStream in C# for reading and writing data.

C# Data Access

Attribute-Driven Property Generator

This example demonstrates a source generator that automatically creates properties based on a custom attribute applied to a class. This simplifies the process of defining properties and reduces...

C# Source Generators

Two-Way Data Binding with INotifyPropertyChanged

This example demonstrates two-way data binding in WPF, where changes in the UI are reflected in the data source, and vice versa. It utilizes the INotifyPropertyChanged interface to notify the UI when...

C# UI Programming

Interfaces vs. Abstract Classes: Defining Vehicle Behavior

This example demonstrates the differences between interfaces and abstract classes in C# by defining a common 'Vehicle' concept and implementing it using both approaches. It highlights when to use each...

C# Object-Oriented Programming (OOP)

Understanding Reference Types in C#

This snippet demonstrates the behavior of reference types in C#, specifically focusing on string, object, and dynamic. Understanding these types is crucial for memory management and type safety in C#...

C# Core C#

Dynamically Invoking Methods Using Reflection

This code demonstrates how to dynamically invoke a method on an object using reflection. This is useful when you need to call a method whose name is not known at compile time or when working with...

C# Advanced C#